Carl Ruebenack/Anna Schultz

Carl Ruebenack/Anna Schultz

Looking for information on Carl Ruebenack, born in Germany (?) about 1867, married Anna Schultz, born in either Bismark, ND or Winona, Missouri, or possibly her family was from there. They are my great grandparents. Having a hard time finding any info on these two. His father is W. F. Ruebenack and he was also born in Germany.